异步转移模式(ATM)技术的出现向传统的以TDM和路由器为基础的网络提出了新的要求。ATM是一种进化的体系,它将多种分散的技术引入到单一的可管理的网上。具体地说就是增加了多点连接;通常利用网内几条不同物理链路的虚连接;具有其本身服务质量参数的多个服务等级和一个高速信元网。所有这些功能要求交换技术本身含有高度的管理智能,并要能通过对每个分散系统的查询和分析迅速对情况作出反应。++ The emergence of Asynchronous Transfer Mode (ATM) technology places new demands on traditional TDM and router based networks. ATM is an evolutionary system that brings a wide variety of decentralized technologies to a single, manageable web. Specifically, multi-point connections are added; virtual links, which typically utilize several different physical links within the network; multiple service levels with their own quality of service parameters, and a high-speed cell network. All of these capabilities require the exchange technology itself to contain a high degree of management intelligence and be able to react quickly to the situation by querying and analyzing each decentralized system. ++